Scale-loop



(No Model.)

0. G. STRUBLER.

SCALE LOOP. Y No. 519,192. Patented Mar. 23, 1897.

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UNITED STATES PATENT OFFIC CHARLES G. STRUBLER, OF TECUMSEH, MICHIGAN.

SCALE-LOOP.

SPECIFICATION forming part of Letters Patent No. 579,192, dated March 23, 1897.

Application filed February 27, 1896. fierial No. 581,067. (No model.)

To all whom it may concern:

Be it known that I, CHARLES G. STRUBLER, a citizen of the United States, residing at Tecumseh, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Scale-Loops; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in a scale-loop having a block-bearing journaled in the ends of a loop-shaped band or clip; and the objects of my improvements are, first, to provide means for the perfect adjustment of the loop-bearing to r the knifeedges or the pivot of the scale; second, to afford facilities for changing the length of the loop and the form of the bearing-block; third, to reduce the friction upon the scale-levers. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is the front elevation. Fig. 2 is the side elevation. Fig. 3 is a top view. Fig. 4 is a detailed view in perspective of the loop and block. Fig. 5 is a front elevation of a double bearing-loop. Fig. 6 is a side elevation of same. Fig. 7 is a front elevation of beam-loop. Fig. Sis a side elevation of same.

Similar letters refer to similar parts throughout the several views.

The band A, blocks 13, and stitute the scale-loop.

The block B (shown in Fig. 1) is vertically adjustable on the journal D. It is channeled or grooved on both top and bottom and is journaled nearer the bottom of one groove than the other. Thus it will be seen that by revolving the block B a half-turn upon its axis will change the inside dimensions of the loop. This feature is very desirable in making a ready adjustment where it is necessary to have the loops in a scale of different lengths.

In Fig. 2 is shown a side elevation of block 13. The dotted lines show the block tilted to one side. The object of this tilting movejournal D conment is to secure a perfect adjustable nonfriction bearing-surface for the scale-pivot.

If desirable, the block B can be made flat on the top and grooved on the bottom, or it can be V-shaped on one face and concave on the other. I prefer, however, to have both sides grooved the same. The journal can also be placed in the center of the block 13, if desired. By this construction when the blocks get out or worn in course of use they can be turned a half-turn and the unused surface brought forward for the pivot to work 011.

In Fig. 5 is shown a double bearing-loop having two block-bearings, one at each end, with a scale-pivot O resting on each as it would be when in actual use. The upper block is shown in section, showing the journal D.

In Fig 6 is shown another view of Fig. 5, leaving out the pivots O. The lower block is shown in dotted lines tilted to one side, as it would be if the scale-pivot was out of alinement.

Figs. 7 and 8 represent two views of loop having my journaled blocks. Fig. 7 shows the block B in section, the remaining part of block resting on the pivot O.

I do not confine myself to the shapes of the band or loop or the shape of the block. The band could be of such shape and bent in such a way as to form the journals D out of the same piece, if desired.

I claim 1. In a scale-loop the combination with a suitable band of connecting bearing-blocks pivotally mounted having free bearing-surfaces on both sides, substantially as described.

2. In a scaleloop the combination with a suitable band of a connecting bearing-block pivotally mounted in the ends of said band, substantially as described.

3. In a scale-loop the combination with a suitable band of a connecting bearing-block pivotally mounted approximately midway its upper and lower surface, substantially as described.

In testimony whereof I affixmy signature in presence of two witnesses.

CHARLES G. STRUBLER.

Vitnesses:

J AS. N. KILLIN, J S. KILLIN. 

